Abstract: The invention relates to 7-amino triazolopyrimidines of formula (I), in which the substituents have the following meanings: R1, R2 represent hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, phenyl, naphthyl; or 5-membered or 6-membered heterocyclyl containing one to four nitrogen atoms or one to three nitrogen atoms and one sulfur or oxygen atom; or 5-membered or 6-membered heteroaryl containing one to four nitrogen atoms or one to three nitrogen atoms and one sulfur or oxygen atom, or R1 and R2 can, together with the nitrogen atom, which binds them, form a 5-membered or 6-membered ring containing one to four nitrogen atoms or one to three nitrogen atoms and one sulfur or oxygen atom; R3 represents alkyl, alkenyl, alkynyl, cycloalkyl, phenylalkyl and alkyl halide; whereby R3 and R2 can be unsubstituted or partially or completely substituted according to the description; X represents halogen, cyano, alkoxy, alkyl halide, phenyl or phenyl that is substituted by Ra.

Abstract: The novel compounds of formula I: wherein R1 is hydrogen or methyl; R2 is hydrogen, or an optionally substituted alkyl, alkenyl, alkynyl, alkadienyl or phenyl group; Hal is halogen; and L1 through L5 are each hydrogen, halogen, alkyl, alkoxy or nitro, provided that at least one of L1 through L5 represents nitro or alkoxy; show selective fungicidal activity. The new compounds are processed with carriers and adjuvants to fungicidal compositions.

Abstract: The novel compounds of formula I: 1

Abstract: The novel compounds of formula I: wherein (R1, R2, Hal and L1 through L5 are defined in the specification) show selective fungicidal activity. The new compounds may be processed with carriers and adjuvants to produce fungicidal compositions.

Abstract: The novel compounds of formula I: ##STR1## wherein R.sup.1, R.sup.2, Hal and L.sup.1 through L.sup.5, are defined in the specification show selective fungicidal activity.

Abstract: An effective and efficient process for the preparation of dialkyl arylmalonates of formula I, ##STR1## (ring A and R are defined in the specification). In this process, an arylmethylhalide of formula II ##STR2## is treated with magnesium in an inert solvent, the resulting Grignard reagent is treated with a dialkyl carbonate or an alkyl chloroformiate, and the resulting reaction mixture is treated with a base.

Abstract: The novel compounds of formula I: wherein (R1, R2, Hal and L1 through L5 are defined in the specification) show selective fungicidal activity. The new compounds may be processed with carriers and adjuvants to produce fungicidal compositions.